EP3599705A1 - Bague de contact pour un stator d'un moteur électrique - Google Patents

Bague de contact pour un stator d'un moteur électrique Download PDF

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Publication number
EP3599705A1
EP3599705A1 EP19187783.6A EP19187783A EP3599705A1 EP 3599705 A1 EP3599705 A1 EP 3599705A1 EP 19187783 A EP19187783 A EP 19187783A EP 3599705 A1 EP3599705 A1 EP 3599705A1
Authority
EP
European Patent Office
Prior art keywords
contact ring
level
stator
conductor
conductors
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19187783.6A
Other languages
German (de)
English (en)
Inventor
Christian FINGER-ALBERT
Stefan OETZEL
Michael Menz
Florian Balling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo eAutomotive Germany GmbH
Original Assignee
Valeo Siemens eAutomotive Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Siemens eAutomotive Germany GmbH filed Critical Valeo Siemens eAutomotive Germany GmbH
Publication of EP3599705A1 publication Critical patent/EP3599705A1/fr
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the invention relates to a contact ring for a stator of an electric motor.
  • Electric motors are generally known and are increasingly used for driving vehicles.
  • An electric motor consists of a stator and a rotor.
  • the stator comprises a large number of slots in which the turns are guided.
  • the windings converge in the winding head and are connected.
  • so-called contact rings or connection plates are known.
  • Such an interconnection board is in DE 10 2015 200 089 B4 shown.
  • This interconnection plate has axial spacers which can be supported directly on the end face of the stator.
  • the object of the present invention is to improve a contact ring.
  • the contact ring for a stator of an electric motor has three levels, a first level with at least one first conductor, a second level made of electrically insulating material, and a third level with at least one second conductor, at least one first and one second feedthrough through the second level, the first feedthrough being smaller than the second feedthrough and in the first feedthrough coil wires of a coil and in the second feedthrough coil wires of at least two coils.
  • the coil wires can also be coil wire ends, for example.
  • the first bushings can receive coil wires from one coil, while the larger second bushings can receive the coil wires from two coils.
  • the second feedthroughs two coil wires from two different coils can already be contacted within the feedthrough.
  • the first conductors can be star point conductors that electrically connect the coil wire ends in the first bushings.
  • the second conductors can be phase conductors which connect the coil wire ends of at least two coils in the second bushings to coil wire ends of at least two further coils in a further second bushing.
  • the arrangement of the first and second conductors on different sides of the insulating material leads to a compact structure of the contact ring.
  • At least one second conductor can preferably stand upright on the contact ring.
  • the second conductor has a height that is greater than its width.
  • the coil wires can be guided in crimped sleeves in the bushings.
  • the insulation of the individual wires in the wire bundle can be overcome by crimping the coil wire ends in the sleeves. This enables a conductive connection to be established via the sleeve between the coil wire ends and the conductor.
  • the coil wires can be welded to the first or second conductor.
  • the welding enables a conductive connection that also has sufficient mechanical stability.
  • At least one first conductor can have an extension in the direction of the second conductors and this extension can be guided through the first bushing.
  • the extension of the first conductor through the first bushings enables both the first conductors and the second conductors to make contact with the end of the coil wires or the sleeves on the same side of the contact ring.
  • the first conductors are connected to the coil wire ends in the first bushings and the second conductors to the coil wire ends of two coils in the second bushings. This is particularly helpful when the contact ring is placed on the stator and the coil wires should be as short as possible. Contacting is then easily possible on the side facing away from the stator.
  • the second level can preferably have at least one holder for the second conductors.
  • the holder can be a clip-in holder into which a conductor can be inserted from above and the conductor is then held by a variable nose.
  • the second conductors can only be applied to the contact ring by the brackets, for example, after the first conductors have contacted the corresponding coil wire ends.
  • the contact ring can further preferably have at least one support element which is operatively connected to the stator or a stator end plate of the stator.
  • This support element creates, for example, a defined distance from the core of the stator.
  • the support element gives the contact ring support for contacting the coil wire ends or sleeves.
  • the second conductor can taper in cross-section from a current connection point to a further current connection point or have a cross-sectional jump.
  • the cross section of the second conductor depends on the current to be conducted and can, for example, have a larger cross section from a first current connection point to a second current connection point than from this second current connection point to a third current connection point.
  • the change in cross-section can be erratic or continuous.
  • the first power connection point can be an interface to the inverter and the second and third power connection points can be a contact point to two coil wire ends or sleeves in a second implementation.
  • the first level can preferably be at a greater distance from the stator than the third level and the second level can be arranged between the first and third levels.
  • the third level is more accessible than the first level, and contacting the coil wire ends with the sleeves or conductors, for example, is easier there than on the first level.
  • the contact ring can thus be placed on the stator, for example, and contact can only be made after it has been placed on the side of the contact ring facing away from the stator.
  • the first conductors carry a lower current than the second conductors and therefore have a smaller cross section than the second conductors.
  • the first conductors can thus be arranged flat on the contact ring, that is to say the width of the conductors is greater than their height.
  • the contact ring can have a further level.
  • the further level can, for example, lie below the first level in the direction of the stator and thereby increase electrical insulation between the stator and the first level.
  • the contact ring and the stator can be potted with a potting material. This protects the stator from moisture.
  • a vehicle has a contact ring for a stator of an electric motor according to one of the preferred configurations.
  • Figure 1 shows a contact ring 1 with an outer diameter 9 and an inner diameter 3.
  • the contact ring 1 has a plurality of bushings 11, 13, 15.
  • the first bushings 13, 15 have a first diameter and the second bushings 11 have a second diameter.
  • In the first bushings 13, 15 there are coil wire ends of one coil each and in the larger second bushings 11 there are coil wire ends of two coils. Two coil wire ends have thus already been contacted in the second bushings 11.
  • the continuous second level 5 made of insulating material gives the ring 1 its stability.
  • Figure 2 shows the first level as an under view or a transparent inside view of the contact ring 1.
  • the first level is, for example, a star point level.
  • Selected first bushings 13, 15 are each connected to conductive sections 17 via conductive webs 19, which each act as the first conductor or neutral conductor 2.
  • Each three first bushings 15, 15a, 15b are conductively connected by a neutral point conductor 2 as the neutral point.
  • the conductive sections 17 are located on the outside 9 or inside 3 of the contact ring 1 and have a connecting web 19 to the bushings 13, 15. A maximum distance for the insulation between different star point conductors 2 is thereby achieved.
  • a first bushing 13 which can accommodate the coil wire ends of a coil with or without a sleeve.
  • Behind bushing 13 is another bushing 15, which is shown by a dashed line is indicated.
  • the bushings 13, 15 are widened in the direction of a stator 21. This enables the coil wire ends, with or without a sleeve, to be introduced more easily into the bushings 13, 15.
  • the conductive sections 17 are located, for example, on the outer edge 9 of the contact ring 1 and lead over a web 19 inwards for passage 13, 15 from where the webs 19 of the conductive sections 17 are bent upwards.
  • the coil wire ends for example, can be attached to these upwardly bent sections 23, 25.
  • the contact ring 1 has a support web 7 on the outer edge 9, which makes it possible to support the contact ring 1 on the stator either directly or by means of, for example, a stator end plate.
  • the stator or the stator end plate can furthermore have a groove or receptacle in which a nose 27 of the holding web 7 can engage to improve stability.
  • Figure 4 shows two exemplary embodiments of the neutral point conductor 2.
  • the neutral point conductor 2 consists of a conductive section 17, a conductive web 19 and a conductive curved section 23, 25.
  • the section 17 can be guided on the outer edge of the contact ring 1.
  • the web 19 acts as a connector to the bushings.
  • the web is bent upwards and pierced with the upwardly bent section 23, 25 the implementation.
  • the star point conductors 2 can either be pushed through the contact ring 1 from below or they are already encapsulated with the insulating material and are then located within the contact ring 1 between the second level 5 and the additional level 6.
  • Figure 5 shows a view of a contact ring 1.
  • the star point level is located below the insulation level 5.
  • a possible further insulation level as an additional level below the star point level for molded-over star point conductors is shown in Figure 5 not visible through the top view.
  • the diameter of the first bushings 13, 15 for receiving the coil wire ends of individual coils is to be distinguished from that of the bushings 11 for receiving coil wire ends of two coils. In the feedthroughs 13, 15 for the individual coils, the upwardly bent sections 23, 25 of the neutral conductor can be seen.
  • coil wire end of a coil with a crimped star point sleeve 29 is also shown by way of example.
  • a crimped-on phase sleeve 31 is also shown, which is crimped over the coil wire ends of two coils and inserted into a second bushing 11.
  • Brackets 41, 43, 45 are provided on the ring for connecting the coil wire ends in the second bushings 11 by means of a second conductor.
  • the holders are designed, for example, as holders 43 for holding two conductors.
  • holders 41 which hold only one conductor.
  • holders 45 which support the conductors only on one side. Choosing the right holder depends on the shape or position of the second conductor.
  • the holding webs 7 are formed with a nose 27 for receiving on the stator or on a stator end plate.
  • the contact ring 1 also has recesses 4, 8, which lead to a weight saving.
  • phase conductors 54, 55, 56 are connected at the end to a contact interface 61, which provides a defined interface to, for example, an inverter.
  • a contact interface 61 which provides a defined interface to, for example, an inverter.
  • Another contact interface 63 is connected to the phase conductors 51, 52, 53, the phase conductors 52, 53 thus being connected to the contact interface 63 in the middle between two contact points of coil wire ends.
  • Figure 8 show a contact ring 1 with six second conductors or phase conductors 51, 52, 53, 54, 55, 56.
  • the phase conductors are each connected to an interface 61, 63 and two sleeves 31, 31a with coil wire ends of two coils each.
  • a phase conductor 51 is connected to the interface 63. From the interface 63, the phase conductor 51 runs with a first cross section to the current connection point 65 with the sleeve 31a, which is connected to the coil wire ends of two coils. The phase conductor 51 then runs to a further current connection point 67 with a further sleeve 31 which is connected to coil wire ends of two further coils. The cross section of the phase conductor 51 is reduced between the current connection point 65 and the further current connection point 67. This takes place in the embodiment of FIG Figure 8 by means of a cross-sectional jump 57.
  • phase conductors 52, 53, 54, 55, 56, three 54, 55, 56 also have a cross-sectional jump 58, 59, 60, which is also shown in FIG Figure 7 is shown.
  • elevations 22 are shown, which ensures the electrical insulation between the current-carrying components.
  • the contact ring 1 in Figure 8 also has retaining webs 7 with a nose 27 for a receptacle, which is formed on the stator 72 or on a stator end plate.
  • the contact ring 1 also has recesses 4, 8, which lead to a weight saving.
  • Figure 9 shows an example of a previously mentioned stator end plate 71 of the laminated core of the stator 72.
  • This end plate represents the last plate of the laminated core in the stator.
  • the stator end plate 71 faces just like all of them other discs of the laminated core teeth 73 and grooves 75, the difference to the other discs of the laminated core in a recess or in a receptacle 77 on the outer edge 79 of the stator end plate 71.
  • the nose 27, the support element 7 of the contact ring 1 can engage in this receptacle 77.
  • a large number of support elements 7 on the outer edge of the contact ring 1 enable the contact ring 1 to be fixed on the stator 72.
  • the contact ring 1 guidance of the contact ring 1 in the direction of the stator 72 is possible via the support elements 7, so that the end sleeves can be inserted automatically into the bushings provided for this purpose. A welding of the sleeves is then possible in a simple form on the upper side, ie the third level, also called the phase level, of the contact ring 1.
  • Figure 10 is a schematic diagram of an embodiment of a vehicle 103, for example a hybrid vehicle or an electric vehicle, comprising an electrical machine 100 with an embodiment of the contact ring 1 for driving the vehicle 103.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Windings For Motors And Generators (AREA)
EP19187783.6A 2018-07-27 2019-07-23 Bague de contact pour un stator d'un moteur électrique Pending EP3599705A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018118280.5A DE102018118280A1 (de) 2018-07-27 2018-07-27 Kontaktschnittstelle für einen Stator eines Elektromotors

Publications (1)

Publication Number Publication Date
EP3599705A1 true EP3599705A1 (fr) 2020-01-29

Family

ID=67438523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19187783.6A Pending EP3599705A1 (fr) 2018-07-27 2019-07-23 Bague de contact pour un stator d'un moteur électrique

Country Status (5)

Country Link
US (1) US11108295B2 (fr)
EP (1) EP3599705A1 (fr)
JP (1) JP2020018161A (fr)
CN (1) CN110784028A (fr)
DE (1) DE102018118280A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11075562B2 (en) * 2017-03-31 2021-07-27 Nidec Corporation Bus bar unit and motor
DE102020000232A1 (de) * 2020-01-16 2021-07-22 Wieland-Werke Aktiengesellschaft Kontakteinrichtung eines Stators, Stator und elektrische Maschine
DE102021101504B4 (de) 2021-01-25 2022-08-04 Schaeffler Technologies AG & Co. KG Verschaltungsring
CN112953073B (zh) * 2021-01-28 2021-10-08 浙江方正电机股份有限公司 一种扁铜线油冷电机定子的端部集成模块及定子
DE102021203212A1 (de) 2021-03-30 2022-10-06 Valeo Siemens Eautomotive Germany Gmbh Stator für eine elektrische Maschine und elektrische Maschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100295394A1 (en) * 2009-05-21 2010-11-25 Asmo Co., Ltd. Electric motor
DE102010039335A1 (de) * 2010-08-16 2012-02-16 Robert Bosch Gmbh Kontakteinrichtung in einem Stator einer elektrischen Maschine
DE102015200089B4 (de) 2015-01-07 2017-03-02 Robert Bosch Gmbh Stator für eine elektrische Maschine und Verfahren zum Herstellen eines solchen
DE102016205633A1 (de) * 2016-04-05 2017-10-05 Robert Bosch Gmbh Kontakteinrichtung für einen Stator einer elektrischen Maschine
EP2959564B1 (fr) 2013-02-22 2018-05-16 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique, notamment d'un composant de véhicule

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JP4083324B2 (ja) * 1998-11-19 2008-04-30 ヤマハモーターエレクトロニクス株式会社 回転電気機器
JP3733312B2 (ja) * 2001-10-26 2006-01-11 住友電装株式会社 車両用薄型ブラシレスモータの集中配電部材に用いるバスバーの製造方法
CN1578064A (zh) * 2003-07-11 2005-02-09 株式会社萌力克 用于旋转电机电枢的绕线架
KR200456092Y1 (ko) * 2010-03-02 2011-10-11 계양전기 주식회사 브러쉬리스 모터용 버스바 장치
DE102010039340A1 (de) * 2010-08-16 2012-02-16 Robert Bosch Gmbh Kontakteinrichtung in einem Stator einer elektrischen Maschine
JP6480797B2 (ja) * 2014-07-08 2019-03-13 Ｋｙｂ株式会社 ステータユニット、ステータユニットを備える回転電機及びステータユニットの製造方法
JP6264216B2 (ja) * 2014-07-18 2018-01-24 株式会社デンソー 回転電機の固定子
DE102015225088A1 (de) * 2014-12-26 2016-06-30 Nidec Corporation Motor und Verfahren zum Herstellen desselben
US11088588B2 (en) * 2015-08-10 2021-08-10 Nidec Corporation Motor with an upper bearing including a washer, a lower bearing, and bearing holding portions
JP6652811B2 (ja) * 2015-10-27 2020-02-26 株式会社ミツバ モータ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100295394A1 (en) * 2009-05-21 2010-11-25 Asmo Co., Ltd. Electric motor
DE102010039335A1 (de) * 2010-08-16 2012-02-16 Robert Bosch Gmbh Kontakteinrichtung in einem Stator einer elektrischen Maschine
EP2959564B1 (fr) 2013-02-22 2018-05-16 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Moteur électrique, notamment d'un composant de véhicule
DE102015200089B4 (de) 2015-01-07 2017-03-02 Robert Bosch Gmbh Stator für eine elektrische Maschine und Verfahren zum Herstellen eines solchen
DE102016205633A1 (de) * 2016-04-05 2017-10-05 Robert Bosch Gmbh Kontakteinrichtung für einen Stator einer elektrischen Maschine

Also Published As

Publication number Publication date
US20200036254A1 (en) 2020-01-30
DE102018118280A1 (de) 2020-01-30
JP2020018161A (ja) 2020-01-30
CN110784028A (zh) 2020-02-11
US11108295B2 (en) 2021-08-31

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